Stop mechanism for phonographs



T.,D. JONE S ET AL sT P MECHANISM FOR PHONOGBAPHS Fi led Sept. a, p21 5' Shets-Sheet 1 I Ah 4, .1925. 1,548,144

T. D. JONES ET AL STOP MECHANISM FOR PHONOGRAPHS Filed Sept. 6, 1921 3 Sheets-Sheet 2 "Aug. 4,1925.

T. D. JONES ET AL STOP' MECHANISM FOR PHONOGRAPHS Filed Sept. 6,1921 5 Sheets-Sheet 5 TAJMQ I/ Em Patented Aug. 4, 1925 warren spa TENT ewes.

"THCTMAS DOUGDAS JONES AND "JOHN -11. BKRR,-1O'EKANSKS terry, MISSOURI; Mien-Y BEERVEXEGU'IRIXfOF'SAIID EDENH. Baum, DECEASED.

STOLP MECH ANI$M F'ORTBHiONDGRil-KTHS.

sApgplicationtfihd"September56, 11921. :S eria1'No, 1498';826.

ilmcill who-m it may concern .iBevit lmo-wnvthatave, WHOM-AS119. Joints and eJOEIN H. BARR,- citizens of tthe United States, and residents of EKa-nsasCity, Jack- -son -:Oou-nty,. State of Missouri, i have invent- .ed aecertainsnew aanduseful Improvement in (Stop. Mechanism for. Phonographs, of which 113118 fOllO WlIlgFlS g a completespecification.

The present invention relates "to stop anechanism lfor gphonographs, 'fl I'lClfifldlllS to providewanriinprovetl stop device for autonnatioal ly :effecting the release .0"f ithe brake- -f0r stopping -the rinotion of the record, 2138' gardless 'of the Flengthof the reeorcl-groove or of itheechanactelwof the groove :atutheend io fi'themecorch Accordingly, -'W8 have devisetl a :novel :form ofw'stop mechanism, in which we' provide -=the brake with :.-a releasing connection h av-ingmeans -for=auto1natieally tripping-the same at the end of the xrecord, which trtpping means ineludera pair or i relatively mov- -.able 1 elements tone 'of which is actuated by the movement of thetoneor reproiducer arm of "the phonograph, while the eothe'r of said -e-lements ilS adapted :for' movement in :rersponsel to the rotary :movement oh-the: record,

and means *also +heing provided; for -eausing zsaidvtripping'means to be actuated byl-the separating action of said elements idue-to the continuing movement-of ion'evo-f them -(after theustoppinglof theitone armratthe endoflthe record. f f

It is further sought to 'provide a stop mechanism -ofthe -=chanacter described in which the--relativ-ely movableelementswhich are responsi-ve, mespectimely, to -@the imove ment of'the tone arm and the rotation o'fthe record, are g provldednvit'h a trlpping tde- V106 which iscarrledi by one oftheelements .and adapted tohe latched byengaging 'with the other element, .so' that on-the separation .offlthe elements due to .the 'tone arm; having reached the end off/the,playmggq'oove on the record, .the .tr ppI-ng device .will automatisally The released for-tripping rthe releasing connection to theta-rake.

lt-is afurther object to,4provideoa practical "and -eliicient, and "yetcomparatively simpleconstruction for carrying out the 'desired .objectso-f .the invention, and vv'hich will require. no other. attention. for its proper :operation than ."the setting ofthefilorakenand ,theereturning of: the tone, arm :to original position a fter :the ,playing .-o:f.tl1e, record.

, vl Vith :the ioregoing general objects in view, as well as minor objects which will appear .inltheu course of the detailed-descrip- @tion, thezi-nvention willpnow be described by rre ference x'to "the .accompanyi-ng drawings L-illustrating one iormz'of --construction which ave have devised for -embodyingmthe ,proposed improvements, after which thenovel features rtherein vwill Ibe particularly -set zforthand-claimed Init1 1edrawing'si Figure 1 .islar plan view of a phonograph equipped with a a stop mechanism constructi ed in accordance with. the :present invention, avith parts of lt-he-toneiarm, record. andv turntable broken away to disclose the mechanism beneath; i l

Figure 21s za viewisilnilarwto that shown :Figure 1, but largely broken away to illustrate only the @artslbf the stop mechanism proper; and with. thebrake in r released gposition; 7'

Figures :3, 4, 5 ,i6Hand 7-are enlarged detail {sectional views taken zonuthejlihesf'lII-III,

v-.respective ly,of Figure 11 on-t of clutching engagement with: the @1111 member which is: connected l with one of the slide elements. Y

Referring mow "to the :sai'darlrawings in detail, ithese .illustrate the- .impmved =stop Mconstructionras applied-Ito anordinary .forin of phonoguaph comprising the usual cabinet .10., turn-table ll, isupportedonthe. up-

per en'dio fla vertical shaft 12,:dnivenlfrom the ,usual motor (notshown) inside the cab} net l0, and a stone or .lrepro ducer arm '14 .mronnted upon the usualsupporting connections 1 5 .with the .tone chamber vwithin the cabinet 10, .the said: arm 14 being prov.videcl avitlmthe usual reproducer '16 fitted with .needle .17 adapted ,to travel in the ,playing groove .18 of. a record 119, supported uponzthe turn-tablell. Theatone orreprofducer arm 14 is mounted for movement across the record 19 from the beginning of the groove 18 at the outer margin of the record to the end of said groove in the vicinity of the center of the record, as is usual in the case of records of the disc form.

In illustrating the improved stop mechanism, we have shown the same in relation to a brake lever 20 pivoted at 21 beneath the turn table 11 and provided with a shoe portion 22 for gripping engagement with the outer margin of the table 11, a spring 23 connected with a link 24 attached to said lever being also provided for actuating the same into operative or braking position whenever released by the mechanism hereinafter described.

The other end of the link 24 is pivotally connected with a lever 25 operating about a fixed pivot 26 and adapted to be engaged by a latch member 27 which is actuated by a spring 28 and, when engaged with the free end of the lever 25, serves to hold the latter with the brake in released position, as shown in Figure 1; or, when disengaged from said lever 25, allows the brake to respond to the action of its spring 23 and be thereby moved into operative position, at which time the lever 25 and latch 27 will occupy the relative positions shown in Figure 2. V

The latch 27 is designed to be released from engagement with the lever 25 by the action of a latch engaging member 29 which is pivotally mounted alongside a track 30, the ends of the member 29 being carried by pivot bearings 31 at the opposite ends of the track 30, so that the latch engagingmember 29 extends the full length of the track 30, with one end of said member maintained in engagement with one end of the latch 27, as clearly illustrated in Figures 1, 2 and 5.

Mounted for sliding movement along the track is a pair of slide elements 32 and 33, adapted for a slight degree of relative movement, and the element 32 slidingly engaging an extension 34 from the element 33, and said extension being formed with a stop lug 35 whereby the extent of relative movement between the elements 32 and 33 is limited. The slide element 32 is provided with an arm 36 which is pivotally connected with an arm. 37 projecting downward from the tone or reproducer arm 14, so that as the arm 14 is caused to move inwardly across a record in the playing thereof, a cor responding movement is imparted to the slide element 32 in the direction of the inner end of the track 30, as will be readily understood. A similar sliding movement would naturally be imparted to the slide element 33 by this action of the tone arm and the movement transmitted thereby to the slide element 32; but in order to insure a positive feeding movement to said slide element 33, independent of any feeding action of the tone arm, we provide means, operated from the vertical shaft 12, for effecting a sliding movement of the element 33 at substantially the same rate of movement as that imparted to the element 32. This means comprises an arm 40 swinging about a fixed pivot 41 and provided with a yoke portion 42 embracing a cam or eccentric 43 fixed to the central portion of a gear wheel 44 journal-ed upon a shaft stub 45 and meshing with a pinion 46 secured to the shaft 12. The throw of the arm 40 by the eccentric 43 is regulated by an adjusting screw 47 carried by one arm of the yoke 42.

The arm 40 also carries a clutch lever 48 pivotally connected to said arm as indicated at 49, and formed at one end of said lever with a suitable eye. or opening 50 for the passage of a pull link 51, one end of which link is pivotally connected, as indicated at 52, with the slide element 33.

Associated with the clutch lever 48- is a suitable spring 53, the action of which spring 53 is to maintain that end of the lever having the opening or eye 50 in clutched relation to the link 51, it being understood that, by this arrangement of clutch means, the link 51 may be thrust forward freely through the opening 50 (that is, in the direction of the right in Figures 1, 2, 8 and 9), but reverse movement of the link 51 will be prevented so long as the lever 48 is subjected to the action of the spring 53, as illustrated in Figure 8. This means, therefore, that any movement of the lever 40 to the right in Figures 1 and 2 will result in a feeding movement of the element 33 to the right, if the lever 48 is acted upon by the spring 53 in the manner shown in Figures 1 and 8. Since it is desired, however, to have the lever 48 relieved of the action of the spring 53 after the brake has been applied, this result is obtained by providing the lever 25 with an arm or extension 55 adapted to engage one end of the lever 48 and rock it against the action of the spring 53, as illustrated in Figure 9, whereupon the clutch lever 48 will not interfere with the reverse movement of the link 51, as is required in the return of the tone arm 14 to its original position opposite the outer margin of the turn-table.

The forward slide element 33 carries a pivoted tripping device in the form of a lever having a pivot pin 61 (see Figure 6) journaled transversely of the slide element 33 and provided with a coil spring 62 for automatically actuating the lever 60 into tripping engagement with the latch engaging member 29, the position of this latter member 29 alongside the track 30 and the full length thereof affording opportunity for the tripping action of the lever 60 in any position of said lever, which position varies, of course, with the length of hit) ' th'erecord. Fhe"rea1"end-of the l-ever"6'0 is adapted'to "be engaged by 'a "latch lug 65 Figur '7) formed ont-heoth'er slide tone arm 'and'of'th'eslide element 32, and as a result of 'a continued movement of the sliding element '33 in response'to the cor tinned 'rotationof the shaft 12 and-of the record 19, the'tripping lever 60 will become released from latching 'enga'gement'vvith the Figure to be effected.

tripping engagement With the memherQQ and thereby effect-ingo'peration oft'he latch '27 to release'the'lever 2'5 'a'nd'applying the brake-22. I

It is, "of course, necessary to reset the tripping device at the' end of 'each trippin'g operation, "and "this is accomplished automaticallyf'by thereturn or reverse move- "ment ofthetone arm 1'4: into its original position, in which movement the laterally gprojecting fi'nger 67 atfthe forward end of thetripplng lever 601's carried "across a cam edge 68 "formed on i a bracket '69 mounted in the. path of 'saidfin' er 67. The engagement of the finger 16? With the cam edge 68 automatically rocks the tripping lever.'6O into inoperative jpositionso as to permit "ready re-engagement iof the'lug165 with "the otherend o f said leVer'GO as'the "tone arm 14 is m'oved s'lightly forwardtagain in the setting o-f'the'nee'dle 17 in *thefirst spiral of the groove '18.

In explanation of the operation f "the improved construction, it Will doe understood that the turn talole is stationary'with the hrakeQQ applied Whenever 'a recor'dis placed upon the turn tahlejpreparatoryto playing'the same, a'nd'inthis posi'tion'o'f the parts-the arm. 55 'of'the-lever 25'main tains the clutch lever 48 inoperative (see thereby permitting any necessary movement of the tone arm and -slide elements "32 and 33*forthe purpose ofsetting the needle-d7 at theheginning 'o fthe record "groove.

With the slide elements 32 and 33 in engagement *with each other, for the purpose of latching the trippingdevlce 01* lever 60, in inoperative" position, the brake -lever 20 Wlll he swung; outwardly against the action of its spring'23 for removing the brake shoe from engagement With the table 11, which Will result 1n automatically latching the 5 lever With the latch member 27-,the springs28 and 62 yielding sufficiently to permit- "this latching engagement NOW as i the playing of the record proceeds, the slide "elements F32 and will smove together -substantial ly in unison across the record, the element 32 movmg primarily in responseito the movement imparted thereto from the tone arm, While theslide element 33 ispropelled ailongpart- -ly' by the movement imparted thereto 1 from the slide clement 82'and -p artly I in response, during the movement-of the tone-Varm, to the feeding action imparted thereto by the pull link 51, as already explai n'ed. WVhen the i movement of ithe-tone arm 14, however, ceases, the slide element- 32 also stops and "the slide element 33 responds solely 'to the feeding movement imparted thereto from the rotary aiction'of -the'shaft'12. This feeding action through the medium oft'he clutch -lever 458 has, during the movement of the :to'ne :arm, tended to effect a sliding movement of the element 38 'atthe same rate-as the slide "element '32, and now continues this feeding movement after the I stopping of "the slide-"element 32, yvith'the result that the elements 32 and 3-3 become slight-1y sepa- "rated, thereby automatically releasing the tripping lever into tripping engagement With the "member 2 9, Which in *turnoperates the latch 2 7'out of'engagem'ent with, the lever 25, and thusreleasing said'lever 25 to permit the application of the brake. This release of the lever 25 again results in engagement ofthe arm 55 -Witl1 the clutch lever 48, and holdsthe latter inoperative until the brake leverQO is-again moved into "the position shown in Figure-1, that is, after the parts have beenset ready for the ,playing of a new record. The reverse movement of the tone arm 14 andresetting thereof 1 have, as already l explained, resulted :in the resetting of the tripping device, on 'account'of the action of the cam edge'68. 'F'romthe foregoing it will be apparent that We haveprovided a practical and most efficient arrangement and construction "for fulfilling therequisit-e function of a stop mechanism of the character described, 1 and one which will operate regardless of the length of the-record orplaying groove, 01 ofthe'natureof suclrgroove at the end of l the record, this end portion of the groove iii-some cases-:assun1ing an outline designed to mechanically =actuate:-the tone arm for the 1 purpose of tripping a stop mechanism the improved mechanism which We have described performs the --reqnired function for all types and :forms of-grooves, and requires no attention on the part of the player other than seeing to it that the tone arm is --m0ve'd sufficiently in the reverse direction-to insure the resetting and'relatching o'f-the trip device.

"While Wehave shown and described What We now regard'as the preferred form of "construction =-for embodying the improvements, We desire -to reserve the right *to a TOG make such changes ormodifications as may fairly fall Within the scope of the appended claims.

Vhat We claim is:

1. An automatic stop for phonographs comprising, incombination with the tone arm and rotating record, a brake provided with a releasing connection, and means for tripping said releasing connection including a pair of elements moving substantially in unison during the travel of said tone arm, one of said elements being adapted to continue its movement, on stopping of said tone arm, in response to the continued rotation of the record, and a tripping device carried by one of said elements and adapted to be locked by engagement with the other element, whereby on separation of said elements said device is released for tripping said releasing connection.

2. An automatic stop for phonographs comprising, in combination with the tone arm and rotating record, a brake provided with a spring latch for releasing said brake, and means for tripping said latch including a track, a pair of elements mounted for travel substantially in unison along said track and provided with a tripping device adapted to be actuated by separation of said elements, a latch engaging member pivoted alongside said track for engagement by said tripping device in any position of the latter, and means operated by the continued movement of the record after stopping of said tone arm for separating said elements.

3. An automatic stop for phonographs comprising, in combination with the tone arm and rotating record, a brake provided with a spring latch for releasing said brake, and means for tripping said latch including a track, a pair of elements mounted for travel substantially in unison along said track and provided with a tripping device adapted to be actuated by separation of said elements, one oi said elements being moved in response to the travel of said tone arm and ,the other element having a final additional movement impart-ed thereto by the continued rotation of the record after stopping of said tone arm, thereby separating said elements, and a latch engaging member pivoted alongside said track for engagement by said tripping device in any position of the latter.

4. An automatic stop for phonographs comprising, in combination with the tone arm and rotating record, a brake provided with a spring latch for releasing said brake, and means for tripping said latch including a track, a pair of elements mounted for travel substantially in unison along said track and provided with a tripping device adapted to be actuated by separation of said elements, one 01" said elements being moved in response to the travel of said tone arm and the other element having a final additional movement imparted thereto by the continued rotation of the record after stopping of said tone arm, thereby separating said elements, a latch engaging member pivoted alongside said track for engagement by said tripping device in any positoin ot the latter, and means acting automatically to reiatch said tripping device as said tone arm is returned to its original position.

5. An automatic stop for phonographs comprising, in combination with the tone arm and rotating record, a brake provided with a spring latch for releasing said brake, and means for tripping said latch including a track, a pair of elements mounted for travel substantially in unison along said track and provided with tripping device adapted to be actuated by separation of said elements, one of said elements being moved in response to the travel of said tone arm and the outer element having a final additional movement imparted thereto by the continued rotation of the record after stopping of said tone arm, thereby separating said elements, a latch engaging member pivoted alongside said track for engagement by said tripping device in any position of the latter, a connection between said elements whereby both are retracted by the return of the tone arm to original position and means actin automatically to relatch said tripping device as said tone arm is returned to original position.

6. An automatic stop for phonographs comprising, in conrbination with the tone arm and rotating record, a brake provided with a releasing connection, and means for tripping said releasing connection including a pair of relatively movable elements, one of said elements being actuated by the movement of said tone arm, a member attached to the other of said elements and provided with a clutch device actuated by the rotation of said record to move said other element at substantially the same rate as said first element during the movement of the tone arm, and a tripping device set in operation by separation of said elements, on stopping of said tone arm, to trip said releasing connection.

7. An automatic stop for phonographs comprising, in combination with the tone arm and rotating record, a brake provided with a releasing connection, and means for tripping said releasing connection including a pair of relatively movable elements, one of said elements being actuated by the movement of said tone arm, a member attached to the other of said elements and provided with a clutch device reciprocated by the rotation of the record to intermittently move said other element at substantially the same rate as said first element during the movement of the tone arm, and a tripping device set in operation by separation of said elements, on stoppingof said tone arm, to

trip said releasing connection.

8. An automatic stop for phonographs comprising, in combination with the tone arm and rotating record, a brake provided with a releasing connection, and means for tripping said releasing connection including a pair of relatively movable elements, one of said elements being actuated by the movement of said-tone arm, a pull member attached to the other of said elements, a pivoted arm reciprocated by the rotation of said record and carrying a clutch lever engaging said pull member and operative to intermittently move the same and said other element at substantially the same rate as said first element during the movement of the tone arm, and a tripping device set in operation by separation of said elements, on stopping of said tone arm, to trip said releasing connection.

9. An automatic stop for phonographs comprising, in combination with the tone arm and rotating record, with a releasing connection, and means for tripping said releasing connection including a pair of relatively movable elements, one of said elements being actuated by the movement of said tone arm, a pull member attached to the other of said elements, a pivoted arm reciprocated by the rotation of said record and carrying a spring-clutch lever engaging said pull member and'operative to intermittently move the same and the other of said elements at substantially the same rate as said first element during the movement of the tone arm, a tripping device set in operation by separation of said elements, on stopping of said tone arm, to trip said releasing connection, andv means acting to maintain said clutch lever inoperative while said brake is in released position.

10. An automatic stop for phonographs comprising in combination with the tone arm and rotating shaft, a brake provided with a releasing connection, and means for tripping said releasing connection including a pair of elements, means actuated by said shaft for imparting movement to one of said elements, means for producing travel of the other of said elements in response to the movement of the tone arm and simultaneously actuating thefirst element at the same rate of speed independently of its actuation by said shaft, said shaft-actuated means operating after the stopping of the tone arm to impart a final additional movement to said first element and a tripping device set in operation by such continued operation of said first element.

11. An automatic stop for phonographs comprising in combination with the tone arm and rotating shaft, a brake provided a brake provided signatures.

with a releasing connection, and means for tripping said releasing connection including a pair of elements adapted for simultaneous movement, one of said elements being operated by the tone arm and effecting movement of said other element, means actuated by the rotating shaft forimparting a final additional movement to said second element after the stoppin of said tone arm, and a tripping device set in operation by the continued movement of said second element.

12. An automatic stop for phonographs comprising in combination with the tone arm and rotating shaft, a brake provided with a releasing connection, and means for tripping said releasing connection including a pair of elements, one of said elements being actuated in response to the rotation of i the shaft and the other element being actuated in response to the movement of the tone arm; said tone arm-actuated element being susceptible of operation at a faster rate of speed than said shaft-actuated element, and means whereby upon the stopping of said tone arm-actuated element, the shaft-operated element through its "continued movement shall effect actuation of said brake.

13. An automatic stop for phonographs, comprising in combination with the tonearm and rotating-shaft, a brake, a'pair of elements driven by said tone-arm and rotatingshaft respectively, said tone-arm element being adapted to effect movement of said rotating-shaft element, a connection between said rotating-shaft element and rotating-shaft permitting the former to be moved by the tone-arm element regardless of the rate of speed of the rotating-shaft, said connection being adapted to impart additional movement to said shaft element upon the stoppage of the tone-arm, and a connection for actuating the brake in response to the additional movement of said shaft element.

14:. An automatic stop for phonographs comprising in combination with the tone arm and rotating shaft, a brake, a pair of elements adapted for simultaneous movement, one of said elements being actuated by the tone arm and adapted to effect move ment of said other element, a clutch operated in response to said rotating shaft, a link connecting said clutch and said secondnamed element and adapted to impart movement to the latter when the movement of the tone arm has ceased, and a connection for actuating the brake in response to the additional movement of said second element.

In witness whereof We hereunto afliX our TOM DOUGLAS J ONES; JOHN H. BARB 

